We take cryptocurrency — so the coins you hold can buy real hardware.Pay in crypto, spend it on real hardware. Free insured shipping worldwide over $399. Plain, unbranded boxes, sent from Germany.Free insured shipping over $399. Your rate is locked for 30 minutes once checkout opens.Rate locked 30 minutes. Every item sealed, serial-checked and covered by a 24-month warranty.Sealed, 24-month warranty.

Saved items Sign in
Lenovo server power supply unit, black metal casing, 2.4 kg

Lenovo

Lenovo 4X20E54691 110 V 220 V AC 80 Plus Gold server power supply

SKU CH-1AB0-62QRT MPN 4X20E54691

Hot-swap redundant power module with 80 Plus Gold efficiency accepts 110 V to 220 V AC input

  • Supply voltage110 V AC 220 V AC
  • Product typePower Module
  • Key features80 Plus Gold TÜV
  • Product weight2.4
  • Hot-swap redundancy keeps servers running during module replacement
  • 80 Plus Gold efficiency lowers energy waste at high loads
  • Wide 90–264 V AC input handles global voltage ranges
  • Full protection suite guards against overload and fault conditions
  • Light 2.4 kg design eases rack installation and maintenance

Redundant server power module

This Lenovo 4X20E54691 is a hot-swap redundant power supply built for ThinkServer platforms. It accepts 110 V AC or 220 V AC input across a 90 Vac to 264 Vac range. The unit carries 80 Plus Gold certification with TÜV verification. High power density keeps the chassis compact while delivering reliable energy to the server.

Buyers needing hot-swap redundancy

Organisations that require continuous uptime and the ability to replace a supply without shutting down will benefit from this module. It suits environments where high efficiency and low current THD are valued. Buyers who need a non-redundant desktop PSU or a different form factor should look elsewhere. The design targets server-class availability rather than workstation use.

80 Plus Gold efficiency rating

The single specification that decides fit is the 80 Plus Gold certification confirmed by TÜV. This level guarantees high efficiency and high power factor across typical loads. If your project demands Platinum-rated efficiency or a lower certification tier, this unit will not match that requirement.

How it compares

Measured against everything we stock in Server & Hot-Plug PSUs, at today’s prices. Recalculated every night.

Price $349.99
Pricier than about 87% of the 3,798 comparable items (median $131.99).

New to this? Buying PC parts with Monero — what to check, what it costs to pay, and what is never asked for.

Specifications

Product
Brand nameLenovo
Product line80 Plus
Model name4 × 20E54691
Product typePower Module
Power
Supply voltage110 V AC 220 V AC
Size & build
Shipping weight1.36 kg
Package size279 × 127 × 102 mm

Questions about this item

Does the 4X20E54691 power module ship with cables or mounting rails, or must they be ordered separately?

The unit is supplied as the power module only; cables and rails are not included and must be purchased separately.

The spec lists 110 V and 220 V AC input — which voltage should I select for my rack?

The supply accepts a wide 90 Vac to 264 Vac range, so it operates on either 110 V or 220 V mains without any manual switching.

What does the 80 Plus Gold rating mean for actual power draw in a running server?

It guarantees at least 80 % efficiency at 20 % load and higher efficiency at typical loads, reducing waste heat and electricity cost.

More in Server & Hot-Plug PSUs

Similar items